Arianna appeared on ABC's 'This Week' with Christiane Amanpour to discuss Newt Gingrich's recent surge in the GOP primary and the challenges he faces going forward.

"Newt Gingrich's main adversary at the moment is Newt Gingrich," she said. "I think Newt Gingrich is likely to defeat Romney simply because Romney addresses the nation as an accountant and conversations with your accountant are never ones you are looking forward to."

She also discussed how his past positions might hurt his current campaign.

"If you go the Newt Gingrich of the 90s...he talked about poverty, he talked about a moral responsibility. Now that Gingrich is not at all the Newt Gingrich running now," she said.